I made a set for my old Bolens 1455 which runs fairly wide terra tires, I cut them down from an old set of semi-truck chains from the 1950's we found on an abandon farm. The interesting thing about truck chains from the 1950's that I discovered is the extremely high carbon steel content, these were so hard that when I cut the bars to the proper length with a pair of bolt cutters (28") cutting one side the other side of the link would just snap with both half's sent flying each direction (you actually had to be careful where they were flying).
I have used these chains for more years than I would like to admit, they have worn 75% or so but I'm sure I would have gone through numerous sets of the soft chain of standard sets. If you watch you will still see sets of older pickup truck chains on estate auctions that normally sell reasonable (especially in the summer months).